2541553644 has 24 divisors (see below), whose sum is σ = 6777476608. Its totient is φ = 726158160.

The previous prime is 2541553627. The next prime is 2541553661. The reversal of 2541553644 is 4463551452.

It is an interprime number because it is at equal distance from previous prime (2541553627) and next prime (2541553661).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15128212 + ... + 15128379.

Almost surely, 2^2541553644 is an apocalyptic number.

It is an amenable number.

2541553644 is an abundant number, since it is smaller than the sum of its proper divisors (4235922964).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2541553644 is a wasteful number, since it uses less digits than its factorization.

2541553644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30256605 (or 30256603 counting only the distinct ones).

The product of its digits is 288000, while the sum is 39.

The square root of 2541553644 is about 50413.8239374876. The cubic root of 2541553644 is about 1364.6871228045.

The spelling of 2541553644 in words is "two billion, five hundred forty-one million, five hundred fifty-three thousand, six hundred forty-four".